Official 390 E.C. Thread

Discussion in 'Classic Sea Rays' started by electricaldoctor, May 19, 2009.

  1. Mer-Sea Monster

    Mer-Sea Monster New Member

    7
    May 30, 2019
    390 EC 1988, Garmin 1042xsv, xHD radar
    Caterpiller 3208 x2
    New member here. Can you point me to directions to add a picture to my profile? Thanks!
     
  2. Mer-Sea Monster

    Mer-Sea Monster New Member

    7
    May 30, 2019
    390 EC 1988, Garmin 1042xsv, xHD radar
    Caterpiller 3208 x2
    Mer-Sea Monster here,
    Relatively new to this forum and have been reading the posts about water in the center section.
    When we bought the boat (88 390 EC, 3208 Cats) last October it was bone dry. Had it out of the water Nov-Jan 19. Splashed at the end of January and in a Marina since. Just opened the center hatch to rearrange things for storage and what do I find? Yep, about 2" of water in the center section. The fresh water tank had been replaced by previous owner with an 80-85 gallon poly tank. No evidence of leaking from it. No damp headliners, mysterious water trails. Dry.
    I was just wondering if you ever figured your mystery source. There is some indication that the water is salt water so I'm really confused. Getting ready to cut access holes to drain and remove foam. Also wondering if you treated anything with Bora Care or similar?
    Any insights you have to pass on would be appreciated.
     
  3. Mer-Sea Monster

    Mer-Sea Monster New Member

    7
    May 30, 2019
    390 EC 1988, Garmin 1042xsv, xHD radar
    Caterpiller 3208 x2
     
  4. Mer-Sea Monster

    Mer-Sea Monster New Member

    7
    May 30, 2019
    390 EC 1988, Garmin 1042xsv, xHD radar
    Caterpiller 3208 x2
    I have an '88 390 with the 3208 Cats. I have a question for the world's leading authority on restoring the EC. When we bought the boat it was bone dry and surveyed above average. Just recently checked the center compartment and found water in there. Already has a poly tank.
    No ports yet. Everything (shower, AC, etc.) seems to be draining properly and no apparent leaks. Getting ready to cut ports and remove water. Simple evaporation test suggests the water is salt, not fresh.
    Question is: Should I pour Bora Care into the water that's there and let it set for awhile or just go ahead and remove as much water and foam as I can? Thanks in advance for any advice.
     
  5. cmn1882

    cmn1882 Member

    38
    May 9, 2012
    Chattanooga - Chickamauga Lake MM 490.5
    1995 Sea Ray Sundancer 250
    5.7 V8 Merc Alpha I Drive
    Hello all...have not been on the site for a bit, but have been lurking the last couple of weeks. Possibly purchasing this boat, have sea trial and survey done on 7-11-19. Anything specific to watch our for? I am aware of the center tank leaking and that the windows will probably be leaky, any specific questions or issues that I should talk to the surveyor about.

    Thanks!

    https://www.yachtworld.com/boats/19...s-cruiser-3557584/?refSource=enhanced listing
     
  6. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 EC
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin 546s Plotter
    454 Crusaders
    Nice looking, unmolested, well kept boat. It doesn't have any electronics to speak of and it appears to ride bow high that may mean it hasn't the common trim tab upgrades done to it. Ask specifically about the water tank and of course any available maintenance history. Optional engine survey with compression and leak down tests. I didn't notice how many hours are on the main engines in the listing.
     
  7. cmn1882

    cmn1882 Member

    38
    May 9, 2012
    Chattanooga - Chickamauga Lake MM 490.5
    1995 Sea Ray Sundancer 250
    5.7 V8 Merc Alpha I Drive

    There are 707 hours on port and 727 on starboard. The generator is reading 4208.
     
  8. WideAss390

    WideAss390 New Member

    2
    Jul 10, 2019
    Soon to own 1989 390 EC
    CAT 3208T
    Hey all, great wealth of info here! I searched but didn’t see anything so figured I would ask.

    Has anyone modded the whole dash by swapping in a newer model dash like an 04-05 dash into one of our old model boats?
     
  9. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 EC
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin 546s Plotter
    454 Crusaders
    That would be an awful lot of work and most likely wouldn't look and/or function well when done. I preferred to fabricate and replace the dash panels and add a NavPod to accommodate the 12" plotter. I like the way it came out and gives an updated look to existing dash design. Sea Ray Dash after remodel.jpg
     
    cmn1882 and techmitch like this.
  10. Emie Boyer

    Emie Boyer New Member

    17
    Aug 23, 2017
    39 express
    454 Merc
    hi my follow 39er lost my swim platform insert dose any one know were I can fine a good use one at
     
  11. WideAss390

    WideAss390 New Member

    2
    Jul 10, 2019
    Soon to own 1989 390 EC
    CAT 3208T

    I think the consensus was swimplatforms.com
     
  12. electricaldoctor

    electricaldoctor Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    May 14, 2008
    Thousand Islands, Rockport, Ontario.
    1988 390 EC
    454 Mercruiser Gassers
    His keyboard mut be FUBAR.
     
  13. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 EC
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin 546s Plotter
    454 Crusaders
    I recently replaced mine with composite inserts from Plasteak. A little over $200 and look great.
     
  14. denjb@yahoo.com

    denjb@yahoo.com Member

    61
    Aug 13, 2009
    Cleveland Ohio
    1988 390EC
    MerCruiser 7.4 Litre, 310 HP.
    So the 1988 searay express cruiser bathroom carpet is no more! Had to pull it up becuase it was just dirty and smelled.

    I would like to replace it with some sort of tile. Either peel and press or trowel it on. Any suggestions, warnings, pitfalls?

    I did notice too that the floor is a bit spongy but may have found the cause for that

    Thanks in advance for the help!
     
  15. Emie Boyer

    Emie Boyer New Member

    17
    Aug 23, 2017
    39 express
    454 Merc
    hi follow 39er need info on replacing my waste tank gauge
     
  16. denjb@yahoo.com

    denjb@yahoo.com Member

    61
    Aug 13, 2009
    Cleveland Ohio
    1988 390EC
    MerCruiser 7.4 Litre, 310 HP.
    Me too! I have been looking at it and not sure yet how to get the sending unit out. The people at the marina said they would have to cut a hole in the deck, pull it out, put in the new one and then patch the hole!
    Not sure yet that I want to go that way so I continue to look
     
  17. Jeepers

    Jeepers Member

    198
    Sep 28, 2010
    Atlantic City,NJ
    1989 390ec
    454x2
    It unscrews.
     
  18. Emie Boyer

    Emie Boyer New Member

    17
    Aug 23, 2017
    39 express
    454 Merc
    is there a part number for that sending unit
     
  19. electricaldoctor

    electricaldoctor Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    May 14, 2008
    Thousand Islands, Rockport, Ontario.
    1988 390 EC
    454 Mercruiser Gassers

Share This Page

Show Sidebar